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Polluted by sewage 632 times in 2025 lasting 4,019 hours
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Donate NowHere are all the reported sewage overflow totals for Runcorn and Helsby in 2025. Sometimes sewage can be being dumped for months at a time.
Reporting refers to how much of the time the monitoring was active. In this constituency all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | Unknown | LABURNUM GROVE | 102 | 1,772 | 94.3 |
| United Utilities | Stanney Mill Brook | MICKLE TRAFFORD PUMPING STATION | 75 | 728 | 97.85 |
| United Utilities | Thornton Brook/River Gowy | ELLESMERE PORT WWTW | 54 | 392 | 99.9 |
| United Utilities | M/C Ship Canal | RUNCORN WASTEWATER TREATMENT WORKS | 21 | 218 | 100 |
| United Utilities | River Weaver | NEWTOWN PUMPING STATION | 33 | 197 | 100 |
| United Utilities | Manchester Ship Canal | TOWN PUMPING STATION | 28 | 189 | 99.9 |
| United Utilities | Manchester Ship Canal | HARDWICK ROADCSO | 34 | 99 | 99.8 |
| United Utilities | Kingsley Brook | OFF WELL LANE KINGSLEY CSO (472JN) | 47 | 89 | 94.2 |
| United Utilities | Hornsmill Brook | HELSBY WWTW | 13 | 87 | 99.8 |
| United Utilities | Manchester Ship Canal | PENN LANE WESTON POINT PR CSO 202LE | 48 | 67 | 99.9 |
| United Utilities | Manchester Ship Canal | HALTON BROW CSO 203EF | 61 | 66 | 96.5 |
| United Utilities | West Central Drain, Mersey Est | ELTON PS | 11 | 40 | 96.7 |
| United Utilities | River Weaver | WATERSIDE DRIVE CSO 472H4 | 23 | 23 | 99.1 |
| United Utilities | Main Drain | HIGH STREET/MOORS LANE CSO | 18 | 14 | 99.9 |
| United Utilities | Manchester Ship Canal | RUNCORN ROAD CSO | 8 | 9 | 100 |
| United Utilities | Willow Brook | RUNCORN TOWN HALL CSO | 4 | 9 | 99.8 |
| United Utilities | River Mersey | TRENTHAM P.S | 18 | 4 | 100 |
| United Utilities | Manchester Ship Canal | THE BROW CSO 202UP | 3 | 3 | 99.4 |
| United Utilities | Frodsham Marsh Ditch | HATLEY LANE COMBINED SEWER OVERFLOW | 11 | 2 | 98 |
| United Utilities | River Mersey | DARESBURY COMBINED SEWER OVERFLOW | 6 | 1 | 96.9 |
| United Utilities | River Weaver | BRIDGE LANE QUAYSIDE CSO | 7 | 1 | 100 |
| United Utilities | Manchester Ship Canal | WATERLOO ROAD CSO (202ZW) | 5 | 0 | 99.6 |
| United Utilities | Unknown | WINDSOR GROVE | 2 | 0 | 99.4 |
| United Utilities | Bridgewater Canal Via Sws | DOWNS ROAD COMBINED SEWER OVERFLOW | 0 | 0 | 100 |
| United Utilities | Hornsmill Brook | HAPSFORD SPS | 0 | 0 | 99.9 |
| United Utilities | Manchester Ship Canal Via Sws | SALTWORKS PUMPING STATION | 0 | 0 | 99.8 |
| United Utilities | Weaver Navigation | SOUTH PARADE CSO 202S2 | 0 | 0 | 97.3 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water
Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API
Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.
This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org